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Forest Insect and Disease Survey; Ontario, 1965 - NFIS

Forest Insect and Disease Survey; Ontario, 1965 - NFIS

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V 27<br />

TABLE 16 (continued)<br />

<strong>Insect</strong> Host Remarks<br />

Phyrria umbra exprimens Wlk.<br />

Rhabdophaga strobiloides (Walsh)<br />

Sciaphila duplex Wlshm.<br />

Sternochetus lapathi (Lin.)<br />

Tenthredinidae #12<br />

Trichiocampus irregularis (Dyar)<br />

Zeiraphera ratzeburgiana Ratz.<br />

bPo<br />

tA<br />

wS<br />

General population decline;<br />

pockets of light new shoot defoliation<br />

in Summers Twp, at<br />

Goldfield road <strong>and</strong> at Pamela Lake<br />

Small numbers of leaf galls in<br />

Colter Twp.<br />

Found in association with other<br />

leaf rollers.<br />

One collection from Eva Twp.; new<br />

distribution point for the district<br />

Numerous colonies on a clump of<br />

willows at Killala Lake road <strong>and</strong><br />

on one tree in Ledger Twp.<br />

Two colonies at widely-separated<br />

collection points.<br />

Eight per cent of current shoots<br />

infested on ten sample trees in<br />

Pic Twp.

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